Adding & Subtracting Fractions

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What is a fraction?

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A fraction represents a part of a whole and consists of a numerator (top number) and a denominator (bottom number).

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How do you add fractions with the same denominator?

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How do you subtract fractions with the same denominator?

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Front

What is the first step in adding fractions with different denominators?

Back

The first step is to find a common denominator for both fractions.

Front

What is a common denominator?

Back

A common denominator is a number that is a multiple of the denominators of the fractions being added or subtracted.

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Front

What do you do if the denominators are different when adding fractions?

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You must first find a common denominator, convert the fractions, and then add the numerators.

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